Steam-superheater.



M. TOLTZ. STEAM SUPER-HEATER. APPLIGATION FILED NOVA, 1910.

Patented Apr. 21, 1914 cIaITEDsTATEsraTENT OFFICE.

Max '.roLTz,. or sm'rAIII.. MINNESOTA, AssIeNon-,iBY MssNE ASSIGNMENTS, To

Locomomvssurnanearsn colapsar, or WILMINGTON, DELAWARE, A coaF To all whom'it mayconcern;

lle itknown that I, Max ToLrz, a citizen of the United States, residing at St. Paul, llaiiisey county, Minnesota, have invented certain new and useful Improvements 1n Steniii-Superheaters, of which the followin" is a full, clear, and exact description, suei as will enable others skilled in the art to make and use the saine.

My invention' relates to improvements In steam superlieaters and has special reference to improved means for connecting superlieatcr elements, tubes, vor ,loops with the saturate and superheated -st'eam headers, which therewith, comprise the superheater.

The object of my invention is to rovide an improved superheater, in wlnci each element, tube or loop, so-called, of the superheater shall be separately connected with the siiperlieater headers in such manner that they may be quickly disconnected from the sinne and as easily reeoniieeted. Other objects of the invention will appear hereinafter.

My invention consists generally in superlieater headers having openings or ducts in their sides, in combination with a block or connector. suitably secured to the headers and containing angle'or elbow passages which communicate with respective openings or ducts thereof, and a superheater element tube or loop, the ends of which are attached to said block and communicate with respective elbow passages therein.1

'lhc invention also consists in various details of construction and in combinations of parts, all as hereinafter described and particularly pointed out in the claims.

My invention will be more readily understood by reference to the accompanying drawing, forming part of this specification and in whichz Figure l is a vertical sectional view, illustrating a saturate steam header, a superheated steam header, andA two superheater elements or loops connected therewith, in accordance with my invention; Fig. 2 is a planview, and Fig. 3 is a. detailed vertical section on the line X X of Fig. 2.

As shown in the drawings, 2 represents the front tlue sheet of a locomotive or like thie boiler, andy 8 are enlarged fire-flues, having their ends secured in the liie sheet 2. 4, 1- are superheater elements, pipes or speciaoaaon of Letters raient. PatentedApr, 21,1914, application inea November 4, 1910. seriai No. 590,699.

loops, of the double return type. These are -arranged in the tubes 3, 3.

lThe ends of the superheatcr loops are connected with the saturate and su erheated steam headers A and B, which atter are connected respectively to the .dry pipe of the boiler and ,to the steam chest or chests of the engines. The superlieater elements 4, 4 conduct the steam from the saturate steam header A to the superheated steam header B, and the loops or elements being subjected to the heat of the fire box gases in the tiues 3 the steam flowing in said elements is raised to a high temperature before being delivered to the steani chests of the engines.

My invention is particularly concerned with the improvement of the means of connecting the su )crheater elements with the headers, and shall hereinafter describe these connections in detail. But first I desire that it shall be understood that the tire tubeil in Fig. 2 is representative of a row of tire tubes extending across the boiler or vertically therein, arallel with, and according to the osition of, the steam headers A and B; w iich latter may be arranged either' horizontally or. vertically in the lsmoke box of the boiler. In like manner the tubes, 3 3, of Fig. 1 represent not one row but two parallel rows of fire tubes, which obviously are parallel to the headers. I prefer thatthe headers shall be arranged edge to edge, that is, one in front of the other, and that they shall occupy a position relatively between the two rows of enlarged fire flues in the boiler. 'llie snperheater elcnients are of identical construction throughout but occupy reverse positions in the parallel rows of flues. The ends of the superheater pipes or elements extend out of the fire tubes 3 and lie parallel with the sides of thi headers, projecting part way across the si( e.

The headers A and B are )referably of the saine thickness, so that their sides A B are in the saine'planes. I prefer that the headers shall be substantially separate, as indicated by the slots, a, in Fig. 2, but preferably form tliein in a single casting the adjacentl edges being connected by the'integral webs b. The webs b, between the headl ers A and B are arranged at the sinne intervals as the pairs of fire tubes 3 3, and each web is provided with a square hole c, as indicated by dott-ed lines in Fig. 2. These square holes extend from side to side of the headers and are adapted to contain the bolts 5, by means of which the hereinafter described'connectors, belonging'l to the pairs of superheater elements, are fastened or secured upon the sides of the headers. The

'sides of the headers are provided with steam outlet and inlet openings orducts'i and- B respectively, these being arranged near the inner Walls ofthe headers as shown.

From the foregoing it will be understood that a plurality or large number of pairs of superheater elements are Vconnected with a single pair of headers, A and B In speak- .ing of the headers I Ashall refer to the up.

per and lower sides thereof, but it will be understood that these terms arerelative and change their meaning according to the posi; tion of the'hcaders in the smoke box. The terms;'pairof -fines and pair of elements as hereinafter used, are intended to ldefine two lues or two elements, one above the other, on opposite sides of thepheaders AandB.-

' The connectors are of identical construction, and therefore the description of the connectors belonging ltov the elements ofa single pair, together with the method of at` taching the same. to the headers, will serve to describe the 'several pairs of elements and connectors-which go to make up a complete heater element and each sei-vesto mechani- Acally connect the ends of its element. The block or connector does not, however, place the ends of the element iin communication but instead is provided with two independent elbow passages 7 each located in an ear 9., to whichthe 'ends 4 and 4 of thev elementare joined and thereby'placed in 53 communicatlon with corresponding openings A andB of the headers A and' B. The openings A and B in the headers are arranged in line with the ends-4 4 and 4 of corresponding elements 'and hence '55 are relatively staggered in the headers. If

desired the connector or block may be substantially rectangular in form, but as the elbow passages therein must connect with the holes in the headers I 'prefer that ythe con- 60 nector shall occupy a relatively diagonal po. sition upon the headers,"and therefore clongate the block.cylis'igonallg1 and, so to, speak,

cut awa-y the unnecessary metal which would he used in making the block rectangular.

d'1 'The onlyr advantage in 'ma'king the block recment, and thenV replaced.

advantage ofthe connector herein shownis 95.;

tangular would be to make the endsof the superheater element of the same length, and

a part 7 which connects with the opening or duct in the side ofv the header and an- 'T do not do this as I find that the ends of other portion 7 at right angles thereto,

the latter receiving the end 4 or Llf of the superheater clement, as best shown in Fig. 3. It is necessary to bore outl the passage 7 to `make a snug fit with theend of tie super-heaterA pipe, and in doing this the hole is boredclear through the end of the connector, the outer-end of the hole being then threaded to receive t-he plug 8. The end of the superheater pipe is expanded in the o ening 7 beforethe plug 8 is screwed into p ace. It will vbe obvious that the plug may be removed at Aany time when it is necessary vto close or repair the end of the ele that the plugs 8, 8 thereof are presented on 4the-outer side ofA the supcrheater, in which positions they are readily accessible from Vthe front of the smoke box. The inner side or end 9 of the block or connector'is pref-` erably faced off perpcndicularly to the ends of thesuperheater pipes, but the'irregular intermediate surface bet-Ween the'se surfaces n eed not be finished. The middle of each connector contains a hole for the bolt 5.

The connectors are directly'opposite' one another on the sides of the headers though preferably reversed in position, and the bolt 5 extends through both connectorsor blocks. The ends of the bolt are threadedl and the connectors are tightened on. the headers by means of nuts 5', and the bolt maybe taken out and both connectors freed from the headers on removal of either of the nuts 5. Separate'boltsor cap screws may be used with the connectors or blocks, but the single bolt is best, particularly in cases where several pairs of superheater heade'rs are used in the same superheater, in which `case the pairs of headers occupy parallel positions and the bolts must be removed from the outer sidesthereof.

As various modifications of my invention will readily suggest themselves to one skilled in the art, I do notconfine the invention to the specific constructions herein shown and described. n

Having thus'described my invention, I

claim as new and desire to'secure by Letters The particular' sages at oppositends'c passages one at each end, one pair of corre- 4box with their side faces substantially in the ers'arra-nged one in front of the other'across lv the smoke box and with their sides in substantially the saine plane, a superheater element or loop' having a short anda long end, ah elongated integral connector having a pair of independent Wholly separated elbovi7 spending ends of th two passages going to different headers and' the other 'pair of ends l having the aforesaid long and short element ends joined respectively thereto, and'means for fastening the connector'to the headers.-

, 2. `In a steamfsuperheater, a saturated and asuper-heated steam header arranged edge on onelgin fro'nt ofiztheoth'er across the smoke box with theiljsldefades'substantially in the saine planes-"and perpendicular to the flue sheets, 'each header hav-ing 'a holeon. a corresponding lside face',la super`uheater element, a; connector blckfclginl'pedi'i aiSilf the' headers and provided -.w vihf1ndepei{lent elbow pas.

Aunicatinf.; respectively with thegafgresaid., eader holes-said from the 'header'. holes parallel With the aforesaid side faces'and receiving thc ends of the suprheater elements;

3, Ina ste'hm s'uperheaterfaJ saturated and a `s'uperheatiisteam header arranged edge on one in front of the other across the smoke sanieplanesvand perpendicular to the flue sheets, each' header having a pair of holes one on each side face, a super-heater element, a pair of connector blocks on opposite side faces of the two headers each provided with independent elbow passages at opposite ends communicating respectively with the aforesaid header holes on one side face of the two headers said elbow passages being, at' their ends remote from the header holes, parallel with the aforesaid side faces and receiving the ends of the super-heater element,

and 1n ans forsecuring the connector blocks inpla e.

4. In a steam superheater, a superheater element or loop adapted to be placed in the flue of a boiler, in combination with a connector or block joining the ends ,of said loopand provided with cavities, coaxial with, and to receive respective ends thereof, plugs closing the outer ends of said cavities and said cavities having substantially right angled ducts for connection to 'saturate and superheated steam headers respectively, substantially as described.

In asteam snperheater, a pair of headers arranged edge to ledge and provided with holes in their sides,gi'ncombination with a bolt extending throuhlsaid headers, 'a pair of connectors Vofblocksg'se'cured upon opposi'tesides of tlieheaders-by saidbolt and containing elbow passages communicating with respective hol's"in-theheaders, and aA -pair of superheater elements, theends ,of which extend into the. elbow passages'of respectivehlo cks,`substantially as described.

fit-A .boiler and' its enlarged fire f1ues,in'. cnib'liftifih with a pair of superheater ele-.f 70

-ments arranged in said fire lues, an integral connector blocl'joining the ends of each loop and containing independent completely separated elbow passages communicating therewitlioland'a lpair of headers arranged 'between saidblocks, communicating with re specti've-pass'ges thereof and wherto said blocks are detachably secured', substantially as described.

' In testimony whereof, I have hereuntoset my hand this 31st day' of October,l`910, in the presence of two subscribing Witnesses.

vMAX ToLrz.

vit-nesses JENNY A. VALLIN, B. C. BANNRQN.' 

